AU
Level 1Exercise normal precautions
Exercise normal precautions
Tonga · Month guide
Tonga in January
Around 27 °C with 287 mm of rain and 7.3 hours of sun a day.
January is a solid shoulder-season month in Tonga. Around 27 °C with 287 mm of rain and 7.3 hours of sun a day. Use the regional grid below to find where this month works best — national averages hide the swings between coast, highlands, and inland.
Acceptable
Tonga · January
What the weather usually does
Tonga · typical month
- Day / night26 – 27 °CYear range 22 – 27 °C
- Rainfall287 mmYear range 93 – 312 mm
- Sunshine7.3 hr / dayYear range 5.2 – 8.0 hr / day
What’s open · January
Things to do in Tonga in January
Nothing in Tonga shuts for the season, but 1 thing below is weather-dependent in January.
- LimitedIsland and beach travel
the most active part of the Southwest Pacific cyclone season
Sources: responsibletravel.com, taketravelinfo.com
Opening seasons are checked by hand against the operators and parks themselves, not derived from the climate figures on this page. Last reviewed 2026-08-28. Dates move — confirm before you book.
5 regions · current month
Tonga, taken apart
Safety · 4 governments
What the governments say about Tonga
Combined advisory · most-cautious-wins
Exercise normal precautions
Highest level across 4 governments · Advisory last changed
See breakdown by countryHide breakdown
DE
Level 1Exercise normal precautions
Exercise normal precautions
NL
Level 1Exercise normal precautions
Exercise normal precautions
US
Level 1Exercise normal precautions
Exercise normal precautions
Climate at a glance · 10-year ERA5
A decade of weather, in one page
— daytime high— overnight low▬ typical range
View data table
| Month | Average daytime high (°C) | Average overnight low (°C) | Typical low | Typical high |
|---|---|---|---|---|
| January | 27.1 | 25.8 | 24.8 | 28.1 |
| February | 27.4 | 26.1 | 24.9 | 28.3 |
| March | 27.1 | 25.8 | 24.7 | 28.1 |
| April | 26.6 | 25.4 | 24.3 | 27.6 |
| May | 25.5 | 24.4 | 23.0 | 26.8 |
| June | 24.7 | 23.6 | 22.1 | 26.0 |
| July | 23.8 | 22.8 | 21.2 | 25.1 |
| August | 23.5 | 22.4 | 20.9 | 24.9 |
| September | 23.7 | 22.7 | 21.0 | 25.2 |
| October | 24.4 | 23.3 | 21.9 | 25.5 |
| November | 25.4 | 24.3 | 22.8 | 26.7 |
| December | 26.4 | 25.2 | 24.0 | 27.4 |
View data table
| Month | Rainfall (mm) |
|---|---|
| January | 287 |
| February | 312 |
| March | 312 |
| April | 194 |
| May | 160 |
| June | 118 |
| July | 93 |
| August | 103 |
| September | 94 |
| October | 157 |
| November | 139 |
| December | 183 |
View data table
| Month | Sunshine hours (hr / day) |
|---|---|
| January | 7.3 |
| February | 6.4 |
| March | 5.9 |
| April | 6.3 |
| May | 5.6 |
| June | 5.2 |
| July | 5.5 |
| August | 5.6 |
| September | 6.6 |
| October | 6.9 |
| November | 8.0 |
| December | 7.9 |
— average▬ typical range
View data table
| Month | Average wind speed (km/h) | Typical low | Typical high |
|---|---|---|---|
| January | 21.1 | 9.6 | 35.2 |
| February | 24.7 | 11.4 | 40.6 |
| March | 21.1 | 10.6 | 32.3 |
| April | 24.8 | 11.8 | 39.8 |
| May | 25.8 | 12.9 | 43.5 |
| June | 24.7 | 12.6 | 39.6 |
| July | 25.7 | 12.8 | 39.1 |
| August | 24.9 | 12.8 | 37.3 |
| September | 25.4 | 11.7 | 39.4 |
| October | 26.3 | 13.4 | 40.3 |
| November | 23.1 | 10.4 | 36.5 |
| December | 22.6 | 10.6 | 36.3 |
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Snow depth
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Sea surface temperature
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Humidity
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